Home / 11,684.18-17,519.54-7,990.90

Finding the Fourth Proportional to 11,684.18, 17,519.54 and 7,990.90

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Solution

The fourth proportional to 11,684.18, 17,519.54 and 7,990.90 is: 11,981.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,684.18 : 17,519.54 = 7,990.90 : x
  2. Step 2: Convert to fraction form
    11,684.18/17,519.54 = 7,990.90/x
  3. Step 3: Cross multiply
    11,684.18x = 17,519.54 × 7,990.90
  4. Step 4: Simplify right side
    11,684.18x = 139,996,892.19
  5. Step 5: Solve for x
    x = 139,996,892.19/11,684.18
  6. Step 6: Final answer
    x = 11,981.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.